Linus yale



YALE & STIMPSON.

Thrashing Machine;

N. PETERS. mtvbihognfinr. Wnhinm no.

Patented May 17, 1838.

Linus YALE, SAMUEL w. sTrMsoN,

AND NATH NIEL s'rr gsonpor Lrr'rLn FALLS; NEwronK. l 9

vr c rNE FOR THnEsHInGeRAIN, 8w.

Specification of Letters Patent No. Z39, dated lylay 17, 1838.

V Machinesfor Threshing Grain and we do hereby declare "that thefollowing is a full and exact description.

The nature of our invention consists in using a large wheel (instead ofa common cylinder), running or placing this wheel in a horizontalposition, on a vertical shaft, and constructing the hopper in such amanner that the machine will feed itself, after the sheaf of grainis'put in, without the trouble of spreading it.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its construction and operation: we

take two pieces of plank six feet long, from two to three inches thickand twelve inches wide, lock them together at right angles 1n thecenter, which forms the sills of the frame, (a, a.) Two other pieces ofplank, of the same width and thickness locked together in the samemanner, form the plates (6, b.) We sustain the plates above the sills bypieces of the same kind of plank set up edgewise between the plates andsills near the ends of the same with iron bolts running through thesills, end pieces and plates, and secured by screws on the bolts, andnuts. This completes the frame.

In the upper side of the sills (in the center) is a step of iron orsteel, and in the plates exactly over the step is a cast iron box inwhich stands a shaft of iron resting in the step below and projectingsome three inches above the plates on which is a pinion (14.) On theplate is a cast iron stem or stud (Z,) about five inches in heightstanding perpendicular, two inchesin diameter secured to the plate by aflange around the bottom with holes near the outer edge by or throughwhich it is bolted to the plate. On this stem is a cast iron wheel (w).The wheel to, is a cast iron rim with converging teeth with a flanchprojecting out about two inches wide and half an inch thick, throughwhich passes bolts to secure it to wood arms, two inches thick and fromsix to eight inches wide about three feet in diameter which carries thepinion (70) about ten turns to one of the wheel On the shaft to whichthe pinion (7c) is attached is a pair of arms of wood two inches thickand eight inches wide, locked together in the center at right angles,the shaft passing through the center and made fast by a flanch and boltsor by keys. On the outer ends of those arms is a rim (0, 0,) of wood oriron making a wheel from four to six feet in diameter. If made of woodthe rim should be about five inches square. The upper side and outeredge of this rim is turned smooth and somewhat beveling and on the upperface or outer edge of this wheel there are four or five circles (struckat the time of turning the wheel) about one inch apart, and iron spikesor 1% inch in diameter and four inches long are driven into this wheelon those circles about one foot apart and project out about one inch,but so placed on each circle that they will form rows diagonal acrossthe wheel instead of pointing to the center. A piece of wood or ironabout six inches wide and from fifteen to eighteen inches long, with thesame kind of teeth in rows is fastened to the lower side of one theplates in such a manner that the spikes will project down or in and comebetween the rows of teeth on the wheel,

that they may pass each other without interfering while the wheel isrunning. There are about sixty spikes in the rim of the wheel and fromfifty to seventy in the piece of wood or iron described above.

A hopper (h, h,) is attached to the frame over the wheel (0, 0,) thebottom of which is made so as to leave about two feet in length andabout four or five inches wide (of the part of the wheel in which is thespikes) exposed to act on the grain when pitched in the hopper by whichmeans it is carried through the spikes which project down, by the motionof the wheel and discharged on the opposite side of the plate from thehopper. The other two quarters of the wheel covered by boards (0, 6,)attached to the plates (5, b.)

To propel this machine by horse power we fasten a pulley (1%,) on thearms (m, m,) of the wheel (10,) on which runs a rope or belt from alarge wheel driven by the horse. To propel it by hand power we have anfloor and the upper end turned smooth above Where the pitman isattached, and two men take hold of those levers and by pushing andpulling alternately put the machine in motion.

What We claim as our invention and desire to secure by Letters Patent isPlacing the spikes in a narrow circle on the face or edge of the largeWheel in combination With the hopper as herein de scribed.

LIN US YALE. SAMUEL W. STIMSON. NATHANIEL STIMSON.

Witnesses: Y

ELECTUS ADAMS, JOHN A. SOI-IUYLER.

